[ANGLÈS] Materials which we have in the earth are finite and, because of the high activity in the
construction sector that it uses a large amount of material throughout the world for such
activity. Because of the different applications in the world of construction, some waste
are generated. The name of these waste are construction and demolition waste. These
waste, environmentally, creates serious problems to the environment. The option of
reusing the waste building, is very attractive because it allows sustainable development
in the world of construction, yet their properties are unknown and not used to its full
potential.
The durability of concrete structures depends essentially on their steel bars, therefore
depends on their resistance to corrosion. As a result, the bond between the reinforced
concrete reinforcement and steel bars are also implicated in the corrosion process. This
present thesis studies the effects of corrosion on the bond between concrete and steel
bars in concrete with different amounts of recycled aggregates.
For this study, it has used various types of materials recycled arid, mortar and concrete,
to a prolonged corrosion test and pull-out test. The main objective of this thesis is to
evaluate the influence of recycled aggregates in the adhesion between steel bars and
concrete with varying degrees of corrosion.
After obtaining the degree of corrosion, it has been tested in pull-out to obtain the
maximum bond stresses and it has been compared the behaviour of different specimens
tested. The results obtained in the present work have been inconclusive. The presence of
recycled aggregates influences the adhesion, increasing the value of the maximum
adhesion between the steel bars and concrete. Depending on the degree of corrosion
acquired, the effect of corrosion is favourable to adhesion.